Expanding Hard Drive Space

My server is running out of space on my system and data partitions.  They are both on a RAID (5) SCSI controller, volume.  The cost of bigger SCSI drives was prohibitive.  So, I'm planning on installing a new SATA RAID controller (Adaptec 2420S) and 4 new drives.

I'd like to be able to just install the new card and drivers, image the system and data partitions to external SATA drives, allow the new RAID to build, then restore the image(s) to the new drives.  I had planned on using Backup Exec as my backup software going forward, but it looks like Acronis will not only provide me with a good imaging tool, but be able to be my backup software for the future.

Anyone have any better ideas or see any potential pitfalls with my plan?  Thanks!!
JAStillwellAsked:
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DarkerCommented:
That shouldn't be an issue with the data partitions, however you may see issues with the system partition as it will be booting up with hardware it has never seen before.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
You can expect problems because you're changing the controller windows is installed on.  Why not just add the RAID controller and use it for data.  How large is the C: drive and what's on it?  Maybe your drive really is too small... but in general, most of the time when people ask this question it's because they don't have the system configured properly.
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NeilParbrookCommented:
Read This document it will help you free up some disk space.

http://www.microsoft.com/technet/prodtechnol/sbs/2003/maintain/movedata.mspx

on a properly configured server you should really on have windows and the program files on the system drive.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
That document is good, but largely incomplete - I reference it myself, but if you truly need space, this will probably prove more useful:
http://www.lwcomputing.com/tips/static/bootdrivesize.asp
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JAStillwellAuthor Commented:
Thanks for all the feedback!

My system partition is reasonably sized, 50Gb, and has about 25Gb available.  The data partition is running short of space, only about 5Gb of free space.  The total raid volume size is 205Gb.

I'm intrigued about the possibility of leaving the SCSI RAID intact and just adding a second RAID set of SATA drives.  I'm not sure there is enough physical space for the existing 4 drives plus 4 more, also I would think that heat might begin to be a concern.

If I install the new SATA RAID controller and its software into the existing system, then image it.  It should already have the software installed and "know" about the new hardware.  Right??
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